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| author | Brian Gerst <brgerst@gmail.com> | 2009-12-09 17:34:43 (GMT) |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-12-10 23:55:39 (GMT) |
| commit | f443ff4201dd25cd4dec183f9919ecba90c8edc2 (patch) | |
| tree | 4da9d9c35e46c68b87b180285517cc6323bd5d03 /arch/x86/kernel/process_64.c | |
| parent | e840227c141116171c89ab1abb5cc9fee6fdb488 (diff) | |
| download | linux-f443ff4201dd25cd4dec183f9919ecba90c8edc2.tar.xz | |
x86: Sync 32/64-bit kernel_thread
Signed-off-by: Brian Gerst <brgerst@gmail.com>
LKML-Reference: <1260380084-3707-5-git-send-email-brgerst@gmail.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/process_64.c')
| -rw-r--r-- | arch/x86/kernel/process_64.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index 00ac66f..d49a909 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -248,10 +248,17 @@ int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) regs.si = (unsigned long) fn; regs.di = (unsigned long) arg; +#ifdef CONFIG_X86_32 + regs.ds = __USER_DS; + regs.es = __USER_DS; + regs.fs = __KERNEL_PERCPU; + regs.gs = __KERNEL_STACK_CANARY; +#endif + regs.orig_ax = -1; regs.ip = (unsigned long) kernel_thread_helper; - regs.cs = __KERNEL_CS; - regs.flags = X86_EFLAGS_IF; + regs.cs = __KERNEL_CS | get_kernel_rpl(); + regs.flags = X86_EFLAGS_IF | 0x2; /* Ok, create the new process.. */ return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); |